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<html>
<head>
  <meta charset="utf-8"/>
  <title>Lazy Load with Alt includes jpg/png/webp extensions</title>
</head>
<body>  
  <article class="markdown-body">
    <h2>Test Case 1</h2>
    <img class="lazyload inited loaded"
      data-src="https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/0579d17015b145a88dd93992c6447d7d~tplv-k3u1fbpfcp-watermark.jpg"
      alt="performance.jpg"
    />
    <h2>Test Case 2</h2>
    <img class="lazyload inited loaded"
      data-src="https://p3-juejin.byteimg.com/tos-cn-i-k3u1fbpfcp/0579d17015b145a88dd93992c6447d7d~tplv-k3u1fbpfcp-watermark.png"
      alt="performance.jpg"
    />
  </article>
</body>
</html>